.boxcontaner {
  width: 1000px;
  height: 30px;
  position: relative;
  background-color: black;
}
.boxcontaner .radiodot {
  position: absolute;
  top: 0px;
  left: 0px;
  background: skyblue;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  z-index: 10;
}
.boxcontaner .bgcmystep {
  z-index: 5;
  position: absolute;
  top: 0px;
  left: 0px;
  background-color: red;
  height: 30px;
  width: 0px;
}
